Three teenagers have died, after a suspected crush at a St Patrick's Night disco in Cookstown, County Tyrone.
Assistant Chief Constable Mark Hamilton, of the Police Service of Northern Ireland, said: "At this stage the cause of the incident is unknown, however police have commenced a full investigation into the circumstances".
He added: "Bad enough, a horrendous tragedy, but we could easily have been looking at more".
"My cousin was out celebrating St Patrick's Day in Cookstown, and fell victim to an unfathomable tragedy".
She continued: "I could still see people laughing with no idea what was going on". While the doors to the hotel were locked on Sunday night, several coaches of young people arrived at the same time resulting in a large flux of people waiting for the gates to open. Thank you Lauren for giving me the pleasure of coaching you all this time'.
"It felt like this went on forever but eventually I felt bodies being dragged over me and beside me.it was the young people in the line who pulled me out".
Police are calling for anyone with footage of the incident not to share it on social media and to hand it to the police.
The outlet reported that some of the people caught in the mayhem, believed to be teenagers and youths, suffered cuts, bruises and crush injuries. Please do not post photographs or videos online. I honestly cant put into words how much you will be missed.
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After she was pulled out, she contacted her parents to tell them she was OK and then began to understand what had happened.
"They came home very, very shaken with rumours that some people had died".
Lauren was a bright and bubbly cheerleader and schoolgirl who lit up the lives of her friends, a close friend said.
One young person died at the scene and two died in hospital this morning, following the incident which unfolded at the Greenvale Hotel in Cookstown.
In a Facebook tribute, her coach said: "You were the most down-to-earth, attractive soul and our Coral team will never be the same without you".
Democratic Unionist Party leader Arlene Foster tweeted that her "thoughts and prayers" were "with everyone impacted".
'Our thoughts are with her parents, her family and her friends in the coming days as they try to come to terms with their immeasurable loss'.
Police also urged anyone who witnessed the fatal incident to come forward, insisting they would not be punished for being underage. I was hysterically screaming for people to move but it was only the people around me who knew the seriousness.
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Ahmad Al-Mahmoud, 37, described the shooter as white-skinned, blond, quite short and wearing a helmet and a bulletproof vest. White also said: "This isn't about cricket; it's about something much bigger and much more important than that".
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He had two homemade bombs in the vehicle . "They have prevented further deaths and risked their own lives to do so", he added. But he drove away and Aziz says he chased the vehicle down the street to a red light, before it made a U-turn and sped away.
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